Leather preservative and process of applying same



Patented July 4, 1933 PATENT orrica CHARLES S. MCNOWN, OF BUNKER HILL, INDIANA.

LEATHER PRESERVATIVE AND PROCESS OF APPLYING SAME No Drawing.

This invention relates to toughening leather, or the like so that it will have increased wearing life.

The chief object'of this invention is to increase the resistance of leather, or the like, so. that it will have a greater length of life than a piece not treated with the invention.

One feature of the invention consists in the water proofing of the leather, or the like, simultaneously with increasing the resistance thereof.

Another feature of the invention consists in retaining the flexibility of the leather when treated with the solution.

Another feature of the invention consists in the variation in the amount of drier that may be employed whereby different kinds of leather may be treated to attain the same degree of toughness or wear resisting qualities or to treat leather of like kind so that different degrees of flexibility can be obtained therein such as the difference in flexibility between sole leather and upper leather for shoes.

Merely b way of illustration, for the proportions 0 the ingredients can be varied somewhat, the following formula is included. Gum copal 3 ounces, oleate aluminum 3 ounces, turpentine asphaltum 3 ounces, spir- 9 its of turpentine 1 ounces, turpentine apan one ounce, asbestine powder ounce, coloring matter or pigment, as desired and required if a colored preservative is to be employed. Each of the ingredients above mentioned is a commercial product sold in the trade under the name herein used. Turpentine asphaltum is believed to be ground ashaltum cut with turpentine and is commony used in lithographers inks. Turpentine japan is a common drier for inks and paints and is believed to be japan gum dissolved in turpentine.

The gum copal is first dissolved in denatured alcohol or aniline oil. The oleate aluminum is dissolved in petroleum oil. The other ingredients are then added to the mixture of the two solutions. The asbestine powder consists chiefly of a very finely divided asbestos and might be termed an asbestos flour product although the size of the particles is .the solution is applied thereto.

Application illedDecember 16, 1929. Serial No. 414,568..

smaller than ordinary flour articles. The aniline oil isthe product of t at name used n the dye i'ng of certain silks, poplin, etc. and 1s bel1eved-to be aniline dissolved in poppy seed oil, china wood oil or a similar vegetable oil.

The ultimate mixture is a solution which preferabl is applied to the flesh side of the leather athough it can be ap lied to either or both sides. The leather be ore the ap lication of the solution thereto must be ry. Preferably sole leather is roughened before This is to facilitate the quic er penetration of the solution mto the pores of the leather.

The addition of the solution to the leather seems to fill the pores of the leather and serves to bind the fibers thereof together mak ng the leather more resistant to wearanc'l incidentall water proof but the solution before mentloned does not make brittle the leather in the tougheningthereof. Ino'ther words the leather can be treated so that it is more firm and pliable than it was previous to the application of the solution.

For treating belting and sole leather the solution is applied to it until the leather is completely saturated therewith. Upper leather is not subjected to this extension treatment and likewise the solution may be modified so that the amount of gum copal is negligible therein or an intermediate amount may be employed if desired and when required.

The invention therefore consists in, first, the preparation of the solution per se, second, a the constituents thereof in the proportions approximately indicated except when modi fied as hereinbefore noted and third, the application of the same to leather or like material. I

While the invention has been described in great detail and with considerable exactness in the foregoing specification the same is in no sense to be considered as restrictive in is character but the various modifications of this invention which will readily suggest themselves to those skilled in the art to which the same applies are all to be understood to be within the broad purview of the invention,

reference being had to the appended claims.

The invention claimed is: 1. A solution suitable for treating leather,

.and the like to increase its wearing qualities comprising a solution including gum copal, oleate aluminum, turpentine asphaltum, spirits of turpentine, turpentine japan and asbestine powder.

2. A solution suitable for treating leather, and the like to increase its wearing qualities comprising a solution including gum copal, oleate aluminum, turpentine asphaltum, spirits of turpentine, turpentine japan, asbestine powder and coloring matter.

3. A solution suitable for treating leather, and the like to increase its wearing qualities comprising a solution including the following ingredients in approximately the proportions enumerated, gum copal three ounces, oleate aluminum three ounces, turpentine asphaltum three ounces, spirits of turpentine one and one-half ounces, turpentine japan one ounce, asbestine powder one-half ounce, coloring matter or pigment, as desired and required.

t. A solution suitable for treating leather,

and the like to increase its wearing qualities comprising a solution including gum copal, oleate aluminum, asbestine powder, and turpentine.

5. The process of preparing a solution suitable for treating leather, and the like to increase its wearing qualities comprising forming a solution of gum copal in denatured alcohol, forming another solution of oleate aluminum in petroleum oil, and then mixing the same together and with turpentine asphaltum, spirits of turpentine, turpentine japan and asbestine powder.

6. The process of preparing a solution suitable for treating leather, and the like to increase its wearing qualities comprising forming a solution of gum copal in aniline oil, forming another solution of oleate aluminum in petroleum oil, and then mixing the same together and with turpentine asphaltum, spirits of turpentine, turpentine japan and asbest-ine powder.

In witness whereof, I have hereunto affixed my signature.

CHARLES S. MONUWN. 

